To learn PHP, do you have to learn htmlcssjs?

If I want to learn PHP, I have to learn htmlcssjs. I want to learn PHP. But why are my current books talking about it together? it looks dizzy with html css js.
Who will explain to me what php html css js does?

Reply to discussion (solution)

Yes, you must learn
PHP is used to provide dynamic data
HTML for web page layout
CSS for page beautification
JS is used to manipulate page elements in a browser

Yes, you must learn
PHP is used to provide dynamic data
HTML for web page layout
CSS for page beautification
JS is used to manipulate page elements in a browser

I have not understood PHP and JS yet. can I describe them in general terms?

PHP backend and js front-end

PHP backend and js front-end

I still don't understand. can you give me some examples? What are PHP implementations and JS implementations?

Before learning PHP, you must first master the basic skills of html, css, js, and jq.
Of course, learning this will not be too difficult. The most important thing is the learning of PHP.

Before learning PHP, you must first master the basic skills of html, css, js, and jq.
Of course, learning this will not be too difficult. The most important thing is the learning of PHP.

What does PHP and JS do?

Html is the page you see
Php js processes data.

Html is the page you see
Php js processes data.

What are the differences between PHP and js? what are the differences? please give an example.

Required? But you don't have to be very proficient. What are the basic needs ?.
No? Very? Same ??? .

Html is the page you see
Php js processes data.

What are the differences between PHP and js? what are the differences? please give an example.

Php is mainly responsible for the background, such as interacting with databases.
Js is mainly responsible for displaying front-end pages. for example, the image slide effect you see is made by js.

Required? But you don't have to be very proficient. What are the basic needs ?.
No? Very? Same ??? .

Why are you sending traditional Chinese characters...